Control system for electric motor
US10663517B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2017 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Mar 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control system for an electric motor comprises a current controller which produces a set of voltage demands for the motor, a current sensing means arranged to produce a current sensing output indicative of electric current in the motor, and a current signal processing means arranged to process the current sensing output signal to produce a modified current signal in which at least one harmonic component present in the current sensing output signal due to inaccuracies in the current measurement is removed or substantially reduced. The modified current signal is combined with a demanded motor current to provide the input to the current controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.